ClassVIII-2020-21

• WELCOME CLASS-8 POPULATION. • Population – refers to the total number of people inhabiting in a specific area. • https://www.youtube.com/watch?v=F7OFGhRIHKw POPULATION AND RESOURCES. • Population and resources are unevenly distributed. • Large population is a strain on limited natural resources. • Demography-social science that deals with the study of human population. • The current population growth rate is 1.11% • The growth rate shows decline from 1.18% per year in 2016. POPULATION GROWTH RATE. https://www.youtube.com/watch?v=R2yPeLJsPOo POPULATION DISTRIBUTION. • Population distribution means the population is spread across the World. • 7.6% of population is concentrated in only 20%of land area • https://www.youtube.com/watch?v=LZkXSV9nrzU POPULATION DENSITY • Population density means the number of people per square kilometre . • In less developed countries- density is higher. • Density= Total population/Total area. • Factors ...

Dear Students, Here is the information on the chapter Migration. Anyone without a book or someone who has missed any part of it, you can refer to this. Thank you.

 Dear students I hope this chapter will help you to know about chemical equation and balancing the chemical equation.

Dear students of class 8(1) I hope this will help you to know more about different types of changes.   When a candle is lighted, some of the solid wax first melts and turns into liquid, it is a physical change. Then it burns to produce a flame. New substances carbon dioxide and water vapour are produced along with the evolution of light and heat energy. this shows a chemical change.